Use override in more classes in fpdfsdk/

fpdfsdk/src/javascript/JS_Object.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_Define.h"
 #include "../../include/javascript/JS_Object.h"
@@ skipping 71 matching lines @@
   pJSObj->Dispose();
   data.SetSecondPassCallback(FreeObject);
 }
 
 CJS_Object::CJS_Object(JSFXObject pObject) : m_pEmbedObj(NULL) {
   v8::Local<v8::Context> context = pObject->CreationContext();
   m_pIsolate = context->GetIsolate();
   m_pObject.Reset(m_pIsolate, pObject);
 };
 
-CJS_Object::~CJS_Object(void) {
+CJS_Object::~CJS_Object() {
   m_pObject.Reset();
 };
 
 void CJS_Object::MakeWeak() {
   m_pObject.SetWeak(this, DisposeObject, v8::WeakCallbackType::kInternalFields);
 }
 
 void CJS_Object::Dispose() {
   m_pObject.Reset();
 }
@@ skipping 53 matching lines @@
     }
   }
 }
 
 // static
 CJS_Timer::TimerMap* CJS_Timer::GetGlobalTimerMap() {
   // Leak the timer array at shutdown.
   static auto* s_TimerMap = new TimerMap;
   return s_TimerMap;
 }